Mechanical stage for microscopes.



Nu; 666,466. Patented Nov, 2, |961.

V A. F. MAnTms.

MECHANICAL STAGE FR MICRUSCOPES.

. l (Application filed June 26, 1901.)

(No Model.)

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' UNITED STATES PATENT OFFICE."

.ALFRED F. MARTINS, OF BOSTON, MASSAOHUSETTS-` MECHANICAL .STAGE-FORMICROSCOPES.

SPECIFICATION forming part of Letters Patent N o. 686,466, datedNovember 12, 1901,.

Application tiled .Tune 26, 1901I l.Serial No. 66,047. (No model.) I

To a/ZZ whom, t may concern:

Be it known that L'ALERED F. MARTINS, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented new and useful Improvements in Mechanical Stages forMicroscopes, of which the following is a specification. i

The object of this invention is to produce a stage for microscopesoperated by mechanical means in such a manner that al1 portions of theobject under inspection shall be brought within the line of vision ofthev microscope.

The invention consists vin a holder for the object to be inspected,mechanism whereby a lateral movement is imparted to said holder, andmechanism actuated by the lateral movement of said holder to impart alongitudinal movement to said holder.

The invention again consists in a holder for the object to be examinedand mechanism to impart a reciprocatory lateral movement and anintermittent longitudinal movement thereto and means whereby'when said,holder is started upon the movements hereinbefore set forth the entiresurface of the objectheld thereby is carried within the line of visionbefore said holder can be returned to the point of beginning.

The invention further consists in the combination and arrangement ofparts set forth in the following specification, and particularly pointedout in the claims thereof.

Referring to the drawings, Figure 1 is a plan view of my improvedmechanical stage for microscopes. Fig. 2 is a side elevation of thesame, taken from the right-hand side of Fig. 1 and showing the stage,microscope, and supporting-frame, together with t-he reliecting-mirror,in position for use. Fig. 3 is a sectional elevation taken on line 3 3,Fig.` 1,

rod by which a rocking motion is imparted to h said rocking lever.

In the drawings, 5 is a microscope of wellknown construction.

allel rods 11 1l, fast to ears 12 12 upon a pivotedlongitudinally-sliding frame 13 13. Said pivoted frame consists of fourbars 14 14 and has two ears 15 15 thereon, which are pivoted to a rod16, rigidly fastened to ears 17 -17 upon 6 is a frame towhich V' thelower supporting-frame 18. Upon the opposite side of the frame 13 tothat at which said frame is pivoted are two lugs 19, slotted at 2O andguided by the two guides 2l 2l on the supporting-frame 18. Said guidesenter said slots 20.

A rod 22, fast to the laterally-sliding frame 9,is connected at each endthereof by a link 23 to a crank 24, fast to a shaft 25, which rotates inbearings 26 on the supporting-frame 18. Handles 27 are attached to thecranks 24, by means of which said cranks and the shaft 25 are rotated.When the cranks 24 are rotated, the sliding frame 9 is given areciprocatory movement, carrying said frame backward and forward acrossthe pivoted longitudinally-sliding frame 13 by the links 23, the ears 10sliding on the rods 11. At each end of the lateral reciprocatorymovement of said sliding frame 9 one of the ears 10 strikes Va lug 28,formed upon a reciprocatory sliding rod 29. Said `rod 29 slides inbearings in the'ears 12 and is bent at right angles 'to its length at 30to engage a lever 31, pivoted at 32 to the intermittent longitudinally-'sliding frame 13, and assaid rod is reciprocated in its bearings ittips the lever 31 alternately upon its pivot 32 to one side and theother of a vertical plane passing through said pivot. The lower end ofsaid lever as it is rocked upon its pivot alternately engages the teethof the two racks33 34, fast to the supporting-frame 18, the teeth ofeach rack being opposite the spaces in the other rack. A tension spiralspring 35 isjoined at one end to the frame 18 and at the other end tothe.

frame 13,` its tendency being to constantly pull said frame 13to theleft, Fig. 1.

In'the center of the supporting-frame 18 is a screw-threaded circularhole 36, in which is IOO secured a tube 37, with a diaphragm 38 therein,having a hole 39 in the center thereof, and this diaphragm may bechanged, as desired, for other diaphragms having diHerent-sized holes.Beneath the diaphragm 38 and inline therewith is a concave mirror 39,pivotally supported upon an ear 40 upon the microscope-frame 41, saidmirror reflecting rays of light upwardly through the diaphragm andobject under inspection to the microscope. A screw 42 fastens thesupporting-frame 18 rigidly (tov an ear 43 upon the microscopeframe 41,so that said microscope-frame 41 and supporting-frame 18 constitute,practically, one frame, which serves to support the microscope, theobject under inspection, and the mechanical stage by which the entiresurface of said object is brought within the line of vision of saidmicroscope.

The operation of the device as a whole is as follows: Assuming thelaterally-sliding frame 9 to be at the extreme right of thesupportingframe 18 and at the front side of said supporting-frame, Fig.1, then the left-hand side of the object under inspection will be in theline of vision of the microscope. Now, rotating the handles 27 the frame9 will be reciprocated upon the rods 11 laterally across the frame 18,at each end of its stroke tipping the lever 31 upon its pivot 32, asherein before described. Assuming the lower end of the lever 31 to be inengagement with the rack 33, when the laterally sliding frame 9 arrivesat the extreme of its backward movement, one of the ears 10 will engagethe lug 28 upon the reciprocatory sliding rod 29, pushing said rodbackwardly, and will tip the lever 31 upon its pivot 32, and the lowerend of said lever will pass from engagement with the rack 33 into thespace in line therewith between two teeth upon the rack 34, and as soonas the rack 33 is disengaged by the said tippingof the lever 31 thespring 35 will carry the longitudinally-sliding frame 13, together withthe laterally-sliding frame 9, the holder 8, and the object underinspection, forward until said lower end of the lever 31 comes intoengagement with the next tooth upon the rack 34, and upon the reversalof the movement of the laterally-sliding frame 9 the lever will berocked upon its pivot and in the opposite direction thereto, entering aspace upon the rack 33, and as the reciprocatory movement of thelaterally-sliding frame 9 is continued this rocking motion of the lever31 will be repeated at each extreme of said laterally-sliding motion ofthe frame 9, resulting in an intermittent longitudinal motion of theframe 13.

It will be seen that the spring 35 draws the frame 13 toward the left,Fig. 1, and that each of the teeth in the racks 33 and 34 acts as a stopagainst which the lower end of the lever 31 abuts, and it will beunderstood that by continuing the rotation of the cranks 24 the holder 8and the object contained therein will receive a reciprocatory lateralmovement and an intermittent longitudinal movement with relation to thesupporting-frame 18 until step by step the object underinspection willhave passed into the line of vision of the microscope 5. After the frame13 has moved to the eXtreme left of the frame 18 and all portions of theobject under inspection have been passed within the line of vision ofthe microscope the said frame 13 is returned to its origninal positionat the right of said supporting frame by tipping said frame 13 upwardlyupon its pivotal rod 16, the lugs 19 passing up through the spaces 44 inthe guides 21. The frame 13 is then pushed to the right, Fig. 1,stretching the spring 35, and is then dropped to a horizontal posit-ion,the lugs 19 passing into the spaces 44, with the slots 2O therein inline with the guides 21, and the holder, together with another objectheld thereby, is then in readiness to be passed beneath the microscopeby means of the mechanism hereinbefore described.

It will be seen that after the longitudinallysliding frame 13 hascommenced its longitudinal movement upon the frame 18 toward the left,Fig. 1, the slots 2O in the lugs 19 will engage the guides 21 upon theframe 18, and therefore the frame 13 cannot be tipped upon the pivotalshaft 16 until said frame has passed to the eXtreme left of said frame18 and the lugs 19 have passed into the spaces 44, disengaging said lugsfrom the guides 21, and therefore after the object has once been placedbeneath the microscope the entire surface of said object will be exposedwithin the line of vision of said microscope before the frame can bereturned to the point of beginning.

Having thus described myinvention, what I claim, and desire by LettersPatent to secure, is-

1. Amicroscope, a frame upon which said microscope is supported, aholder for the object to be inspected, mechanism whereby a lateralmovement is imparted to said holder, and mechanism actuated by thelateral movement of said holder to impart a longitudinal movement tosaid holder.

2. A microscope, a frame upon which said microscope is supported, aholder for the object to be inspected, mechanism whereby a lateralmovement is imparted to said holder, and mechanism actuated by saidfirst-named mechanism to impart a longitudinal movement to said holder.

3. A microscope, a frame upon which said microscope is supported, aholder for the object to be inspected, mechanism whereby a lateralmovement is imparted to said holder, and mechanism actuated by thelateral movement of said holder to impart an intermittent longitudinalmovement to said holder.

4. A microscope, a frame upon which said microscope is supported, aholder for the object to be inspected, mechanism whereby a lateralmovement is imparted to said holder, and mechanism actuated by thelateral move- IOO IIC

ment of said holder to impart an intermittent longitudinal movement tosaid holder at each extreme of its lateral movement.

5. A microscope, a frame upon Which said microscope is supported, asliding frame pivoted to and arrangedto slide longitudinally upon saidsupporting-frame, means whereby said sliding frame is pivoted to saidsupporting-frame, a second sliding frame arranged to slide laterallyupon said longitudinallysliding frame, and a holder for the object to beinspected fast to said laterally-sliding frame.

6. A microscope, a frame upon which said microscope is supported, asliding frame arranged to slide longitudinally upon said supportingframe, a second sliding frame arranged to slide laterally upon saidlongitudinally-sliding frame,'a holder for the object to be inspectedfast to said laterally-sliding frame, mechanism to move said longitudi-.nally-sliding frame in one direction, and

means to prevent said longitudinally-sliding frame from being moved inthe opposite direction before it arrives at a predetermined point, saidmeans consisting of guides upon said su pporting-frame arranged toengage slots upon said longitudinally-sliding frame.

7. A microscope, a frame upon which said microscope is supported, asliding frame pivoted to and arranged to slide longitudinally upon saidsupporting-frame, means whereby saidV sliding frame is pivoted to saidsupporting-frame, a Second sliding frame arranged to fslide laterallyupon said longitudinallysliding frame, a holder for the object to beinspected fast to said laterally-sliding frame, and means to lock saidlongitudinally-slidin g frame against vertical movement until it arrivesat one extreme of its longitudinal movement.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

ALFRED F. MARTINS.

Witnesses:

CHARLES -S. GooDINe, WILLIAM CLAUS.

